Waterton. 1Epithemia turgida var. granulata (4541) 2 Rhopalodia gibba (4533) 3 Epithemia adnata (4532) 4–6 Epithemia smithii (4520, 4535) 7 Denticula kuetzingii (4544) 8 Rhopalodia operculata (4570) 9 Epithemia sp. (4543) 10–14 Epithemia argus (4541, 4543). Scale bars: 10 µm.